*misc

1 files changed, 10 insertions, 4 deletions

diff --git a/src/lua51/lparser.h b/src/lua51/lparser.h
index 18836af..dbd7405 100644
--- a/src/lua51/lparser.h
+++ b/src/lua51/lparser.h
@@ -34,8 +34,9 @@ typedef enum {
   VVARARG	/* info = instruction pc */
 } expkind;
 
+//c 存放表达式信息
 typedef struct expdesc {
-  expkind k;
+  expkind k; // 表达式类型
   union {
     struct { int info, aux; } s;
     lua_Number nval;
@@ -54,27 +55,32 @@ typedef struct upvaldesc {
 struct BlockCnt;  /* defined in lparser.c */
 
 
+//c 编译过程（词法分析、语法分析、代码生成阶段）的临时数据结构
+//c 用来辅助生成字节码 
 /* state needed to generate code for a given function */
 typedef struct FuncState {
+	//c 函数字节码
   Proto *f;  /* current function header */
   Table *h;  /* table to find (and reuse) elements in `k' */
-  struct FuncState *prev;  /* enclosing function */
+	//c 指向父函数的指针
+  struct FuncState *prev;  /* enclosing function */ 
   struct LexState *ls;  /* lexical state */
   struct lua_State *L;  /* copy of the Lua state */
   struct BlockCnt *bl;  /* chain of current blocks */
   int pc;  /* next position to code (equivalent to `ncode') */
   int lasttarget;   /* `pc' of last `jump target' */
   int jpc;  /* list of pending jumps to `pc' */
-  int freereg;  /* first free register */
+  int freereg;  /* first free register */ // 用来指示局部变量的栈位置
   int nk;  /* number of elements in `k' */
   int np;  /* number of elements in `p' */
   short nlocvars;  /* number of elements in `locvars' */
   lu_byte nactvar;  /* number of active local variables */
   upvaldesc upvalues[LUAI_MAXUPVALUES];  /* upvalues */
-  unsigned short actvar[LUAI_MAXVARS];  /* declared-variable stack */
+  unsigned short actvar[LUAI_MAXVARS];  /* declared-variable stack */ // 在函数原型f->locvars的序号
 } FuncState;
 
 
+//c 编译的唯一入口，包含词法、语法、代码生成
 LUAI_FUNC Proto *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff,
                                             const char *name);